| --- |
| title: AgentFEM Pipe Assembly Lab |
| emoji: 🧩 |
| colorFrom: green |
| colorTo: gray |
| sdk: static |
| app_file: index.html |
| pinned: false |
| license: apache-2.0 |
| short_description: Build pipes and solve expansion, supports and vibration. |
| models: |
| - HaomingLuo/AgentFEM-Pipe-ROM |
| datasets: |
| - HaomingLuo/AgentFEM-Pipe-Components |
| tags: |
| - physics |
| - finite-element-method |
| - scientific-computing |
| - reduced-order-model |
| --- |
| |
| # AgentFEM Pipe Assembly Lab |
|
|
| ## v1.4 — Task-led demonstration |
|
|
| Start with **Build pipe**: add straights, elbows and supports directly beside the |
| undeformed 3D route. Choose a straight, L, U or spatial preset, then explore |
| **thermal movement** or **damper comparison** without losing your assembly. |
| Cold-state comparisons are computed automatically with the same gravity load. |
| Changing a support retains the previous solved case, making the movement/load |
| trade-off visible. Desktop harmonic playback uses matched side-by-side views; |
| smaller screens use an overlay. Both use identical display amplification. |
|
|
| The vibration example applies a 1000 N vertical harmonic force at a movable |
| joint, near the first natural frequency, with assumed 2% modal damping. Add a |
| 10 kN·s/m viscous damper and compare computed amplitudes and damper force. |
| The force, support and damper settings remain editable. This is an illustrative |
| excitation, not an operating measurement or a damper product selection. |
|
|
| 中文：先选“受热位移”或“阻尼器减振”，再看前后变化。对照自动计算；编辑管路、 |
| 计算参数、保存工程和导出报告按需展开。底层组件与验证数据沿用 v1.3。 |
|
|
| ## v1.3 — Power-piping research sections |
|
|
| **Four pipe services, 24 new solid-FE components, 108 assembly records.** |
|
|
| Main steam, hot reheat, cold reheat and high-pressure feedwater now have |
| independently assembled component operators. The Space switches section geometry, |
| stiffness, mass and effective thermal expansion together. It includes thermal |
| movement, support reactions, modes, free decay and forced-response comparison. |
|
|
| The main-steam section uses a published calculated bore/wall pair; other sections |
| and all effective material constants, layouts and loads are benchmark assumptions. |
| See [case definitions and provenance](POWER_CASES.md). This is still a dry-pipe, |
| constant-property research model, not plant design approval. |
|
|
| New validation: 108 independent Python/browser comparisons, 12 harmonic sweeps, |
| and four refined-bend mesh checks. Original records are preserved. The complete |
| library now contains **72 components**. Data and operators use CC BY 4.0; |
| solver/example code retains its existing Apache-2.0 license. |
|
|
| 中文：新增主蒸汽、再热热段、再热冷段和高压给水四类研究截面。可比较管路、 |
| 支撑与阻尼器设置对热位移和振动的影响。尺寸来源、研究假设与验证报告一并提供。 |
|
|
| ## v1.2 · Two engineering workflows |
|
|
| - **Thermal movement & supports / 热位移与支吊架**: displacement, support reactions |
| and fixed-inlet force/moment, with baseline comparison. |
| - **Vibration & mitigation / 振动与减振**: modes, free decay, and user-specified |
| harmonic force. Compare peak response and frequency sweeps with/without a damper. |
| - Force position/direction/amplitude/frequency and assumed background damping are |
| explicit and saved in project files. Harmonic CSV exports both response curves. |
|
|
| The four major power-piping systems guide development; current routes remain |
| generic dry-pipe research examples, not plant designs or code assessments. |
|
|
| Build a pipe route. Add a support. See how the whole system responds. |
|
|
|  |
|
|
| **English / 中文** · Static web app · Real browser-side component-ROM solves · No login or backend required. |
|
|
| - Connect straight pipes and 90° elbows into planar or spatial routes. |
| - Apply uniform heating and self-weight. |
| - Add fixed, vertical-restraint or linear spring supports. |
| - Explore displacement, support force, and the first three natural modes. |
| - Place a grounded viscous damper; compare physical free-decay histories with and without it. |
| - Keep a baseline, undo edits, save/reopen projects, and export CSV or a printable report. |
|
|
| [Dataset](https://huggingface.co/datasets/HaomingLuo/AgentFEM-Pipe-Components) · [Downloadable model](https://huggingface.co/HaomingLuo/AgentFEM-Pipe-ROM) · [AgentFEM](https://github.com/haoming-luo/agentfem) |
|
|
| The compact operators come from three-dimensional solid finite elements assembled with AgentFEM, reduced by static condensation and Craig–Bampton synthesis. User edits trigger a new assembled solve, not a nearest-neighbour lookup. This release uses a physics-based ROM, not neural inference. |
|
|
| Code: Apache-2.0. `data/` numerical operators: CC BY 4.0. Vendor libraries retain their included MIT licenses. |
|
|
| 中文：拼接管道、设置支撑、改变温升，在网页中观察位移、支撑反力与振型。计算由浏览器完成；数据、模型与验证记录均可下载。 |
|
|
| v1.1：增加真实黏性阻尼与振动衰减、末端拼接预览、撤销重做、方案保存、对照比较和结果导出。报告用于初步方案讨论，不替代管道规范校核。详见 [项目格式与动力学说明](PROJECT_FORMAT.md)。 |
|
|
